Automobile engine left suspension assembly

Abstract

The invention discloses a left suspension assembly of an automobile engine, which includes a left suspension and a left suspension bracket. The left suspension includes a vehicle body connection frame, a support arm and a rubber bush. The rubber bush includes an annular shell, a metal core, The first rubber and the second rubber, the first rubber includes a ring part and a "eight"-shaped part, the inner wall of the rubber part facing the upper left and upper right of the metal core on the second rubber is zigzag; the body connecting frame includes a left suspension The upper bracket, the lower bracket of the left suspension and the limit plate of the left suspension are all sheet metal parts, and the support arm and the left suspension bracket are cast parts, which can prevent the static stiffness curve of the suspension from appearing when the transmission is too vibrated Inflection point; avoid the second-order and fourth-order excitation of the engine, so as to avoid resonance during use, so as to meet the modal requirements of the left suspension bracket and the loading boundary requirements of the engine and the whole vehicle; the body connecting frame is a welded combination of sheet metal parts frame, and integrates the air filter installation function.

Description

technical field [0001] The invention relates to an automobile engine suspension structure, in particular to an engine left suspension assembly. Background technique [0002] The existing engine left suspension assembly includes a left suspension and a left suspension bracket. The left suspension usually includes a body connecting frame, a bracket used to connect with the left suspension bracket, and a rubber bush connected between the body connecting frame and the bracket, and the rubber bush plays a role in shock absorption. The rubber bushing includes an annular shell and a metal core. The metal core is centrally arranged in the annular shell and is vulcanized and fixed together with the annular shell through the first rubber. The inner wall of the annular shell is vulcanized and fixed with the second rubber. Due to the unreasonable structural design of the rubber bushing, the static stiffness curve of the suspension is prone to inflection points, the NVH performance of t...

AI Technical Summary

Problems solved by technology

Due to the unreasonable structural design of the rubber bushing, the static stiffness curve of the suspension is prone to inflection points, the NVH performance of the vehicle is poor, and the shock absorption effect is not good

[0003] The left suspension bracket is usually welded by stamping and forming sheet metal parts. The stamping and forming sheet metal parts have the advantage of light weight, but welding is troublesome and the accuracy is not guaranteed; the boundary conditions of the engine and the vehicle cannot be met during installation. The mode of the left suspension bracket is low, and it is impossible to avoid the second-order and fourth-order excitation of the engine, resulting in resonance and affecting NVH performance

Images